Reptiles
During
comprehensive surveys conducted at BNL in 1994 and 1995, five
species of reptiles were observed on transect surveys, and an
additional five species were added as results of incidental
observations. Along the terrestrial transects, the
eastern box turtle
was the most frequently observed reptile. Box turtles were
found in all habitat types sampled including pine plantations,
pitch pine/oak forests, fields and wetlands. The garter snake,
milk snake,
hognose snake, northern brown snake, and
black racer
were found in upland habitats. The ribbon snake, garter snake,
snapping
turtle, painted turtle, and
spotted turtle
were found in wetland habitats. The snapping turtle and
painted turtle were commonly observed along the Peconic river
system. The spotted turtle was uncommon, as only a few shells
from dead turtles were found in the headwater areas of the
Peconic River upstream of the BNL Sewage Treatment Plant.
Few snakes were found in uplands, the black racer was the most
common species observed in this area. Other species including
the eastern hognose snake, milk snake, and northern brown
snake are represented on site by only one observation each.
The low number of upland observations of terrestrial snakes
partially due to the dry sandy habitat on the BNL site and
possibly due to past use of pesticides. The eastern garter
snake was the only snake found using an artificial hiding
place.
Selected Reptile Species Accounts
Turtles
Box Turtle (Terrapene
carolina)
The box turtle is the only exclusively terrestrial turtle
found on the BNL site. While relatively common in pine barrens
habitats, box turtles are often killed by automobiles and
brush fires. Box turtles are most frequently observed in
spring months or after rain storms; they generally aestivate
(remain dormant) in swampy areas during the warmer summer
months. Box turtles are territorial: an individual turtle may
spend its life in an area scarcely larger than a football
field, provided habitat conditions remain favorable.
During surveys box turtles were commonly observed in the
undeveloped portions of the BNL site, while occasional
observations were made of hatchlings and juveniles. Both
adults and young were typically observed in wetlands,
particularly in the summer and fall. A number of box turtle
shells were found onsite: one by Water Tank Pond, two each by
Zeek's Pond and wetland, and several were found within or
adjacent to the wetlands associated with the Peconic River.
Snapping
Turtle (Chelydra serpentine)
Snapping turtles are commonly observed in the Peconic
River, Zeek's Pond, the
RHIC ponds, and the ecology field ponds. Female snapping
turtles have been observed laying eggs in June in the sand
borders of the east firebreak. Snapping turtles are aquatic
and feed on aquatic vegetation, carrion, and occasionally
fish
and amphibians. Snappers are the largest species of turtle
found on the BNL site. Adults estimated at 5 to 15 lbs. have
been observed.
Spotted turtle (Clemmys guttata)
The spotted turtle, a New York State species of special
concern, is a distinguished semiaquatic species with a dark
shell and bright yellow spots. Habitats include emergent
marshes, wetlands, bogs, small ponds, ditches and other
shallow water bodies (Conant, 1975). It is omnivorous, feeding
on a variety of aquatic invertebrates, fish, amphibians, and
vegetation. It hibernates in soft mud bottoms of ponds and
wetlands during the winter. The spotted turtle breeds in early
to late spring and lays eggs in June and July (DeGraaf and
Rudis, 1983). Spotted turtles appear to be present in the
Peconic river system in very low numbers.
Stinkpot (Sternotherus
odoratus)
Stinkpots prefer quiet or
slow-moving, shallow, mud-bottomed waters. They are highly
aquatic, seldom leaving the water except to lay eggs. The
stinkpot is a small turtle (carapace [shell] length from 3 to
5.375 in.) that is sometimes mistaken for a juvenile snapping
turtle. One adult male stinkpot was observed at the east
firebreak on the Peconic River in 1994. The stinkpot is cited
as a unique species in the Peconic drainage due to its local
rarity; it is widespread and common in other portions of New
York.
Snakes
Black racer (Coluber
constrictor)
The black racer is diurnal
(daytime-active), feeding on large insects, frogs, other
species of snakes, small rodents, and birds. The adults are
uniformly black on the back with white or gray bellies. The
black racer has been observed in the Gamma Field, on the edges
of forested wetlands, and in pitch pine/oak forests.
Eastern Hognose Snake (Heterodon platyrhinos)
The eastern hognose snake is listed as a special concern
species by the State of New York. Populations in portions of
the state have declined due to habitat loss and fragmentation.
Their preferred habitat is open, sandy-soiled areas, thinly
wooded upland hillsides, cultivated fields, or woodland
meadows. Their principal food source is frogs and toads. They
hibernate in the winter months by burrowing deeply in to loose
soils.
During surveys, only one adult (24 in.), eastern hognose
snake was observed and photographed on the berm north of the
sewage treatment lagoons. While the black racer, garter, and
ribbon snakes appear to be fairly common on the BNL site, the
hognose and milk snake appear to be quite uncommon. The
scarcity of hognose snakes is not due to a lack of a food
supply; fowler's toads are common throughout the BNL site.
Milk Snake (Lampropeltis
triangulum)
Milk snakes are usually found under rotting logs or stumps.
They are secretive and usually not seen in the open except at
night. They inhabit a variety of habitats including pine
forests, open deciduous woodlands, meadows, farmland, and
suburban areas. Common food items include rodents and small
birds.
Reptiles observed on the BNL site
Reptiles listed in
alphabetical order by scientific name.
TURTLES |
|
Common Name |
Scientific Name |
Snapping
turtle |
Chelydra serpentina |
Spotted
turtle |
Clemmys
guttata |
Painted
turtle |
Chrysemys picta |
Box turtle |
Terrapene carolina |
Stinkpot
turtle |
Sternotherus odoratus |
SNAKES |
|
Common Name |
Scientific Name |
Northern brown snake |
Storeria dekayi |
Eastern
garter snake |
Thamnophis sirtalis |
Eastern
ribbon snake |
Thamnophis sauritus |
Eastern
hognose snake |
Heterodon platyrhinos |
Northern
black racer |
Coluber
constrictor |
Eastern
milk snake |
Lampropeltis triangulum |
Click here for additional information on BNL and
Upton Reserve Herpetology.
Last Modified: February 1, 2008 Please forward all questions about this site to:
Mary Daum
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